单选题
Which of the following is NOT true of chronic diseases in the U. S.?
A、
They account for 70% of all deaths.
B、
They are responsible for most of the health care costs.
C、
They often result in unhealthy lifestyles.
D、
They are largely preventable.
【正确答案】
C
【答案解析】
细节题。从短文的第三、六段可以判断出选项C是错误的。
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